Insulator-clamp



- J. SCHNEIDER.

INS'ULATOR CLAMP. APIHCATION FILED Ann. 1919.

1,334,802. Patented Mar. 23, 1920.-

I l I INVENTOR JObW SCHNHDHT BY /ln r1 ATTORNEYS UNITED STATES PATENT OFFICE.

JOHN SCHNEIDER, ELIZABETH, NEW JERSEY.

msunmonponamr.

To allwhom. it may-0101mm:

Be it' known that I JOHN Sonmnonn, a citizen of the United States, and a resident of Elizabeth, county of Union, and State of New Jersey, have lnvented a new and Im- 4 roved Insulator-Clamp, of which the folowing is a full, clear,- and exact description. v

This invention relates to insulator clamps, and more particularly to an adapter clamp for use in connection with insulators.

. An object of this invention is to rovide the design of an insulator clamp which may to provide an insulator clamp which will in efi'ect function as an ada ter to be'mounted upon the up ermost hea of a standard insulator for t e purpose of holding in position electrical transmissioh conductors or wires carried by the insulatbr.

Another object of this invention is to rovide an insulator clamp which'will a apt itself to the head of variously shaped insulators, and 'more particularly an insulator clamp which may be conveniently and quicklyinstalled upon insulators even though the insulators vary in their circumferential proportions.

With the above and other objects in view. the invention has relation to a certain' combination andarrangement. of parts, an example of whichis described in the follow-, ing specification, pointed out in the appended claims, and illustrated in the accompanying drawings, wherein:

Figure 1 shows a plan view of the insulator clamp.

Fig. 2 shows the insulator clamp in eleration with a portion thereof broken away, and parts of the clamp shown in dotted lines.

Fig. '3 also shows the clamp in elevation with the parts thereof broken away to illustrate the form of adapter cap used in connection with the insulator clamp,

Fig. 4 shows'a clamp leg separately from the assembled device.

Referring now more in particular to the drawings, the numeral 1 oiuts out a base member with a substantially rectangulare, shape. At each corner of the base a pair 6f Specification of Letters Patent. Patented Mar, 23, 1920. Application filed April' 22, 1919. Serial No. 291,012.

extended ears 2 are formed integrally with the base member, and are spaced in parallel relationship one with the other, thus formmg an opening in which a clamp leg is pivotally mounted. The outer wall base of the material, bounded between the parallel walls the reference numeral 3, and is pivotally mounted between the extended ears on a pin 4 bolt or rivet may be employed for pivoting the clamp leg. in position, preferably afrivet will be used to obtain a better,

lastin and more ermanent job. The u per end 0 the clamp llag is provided with a bore which receives a ca screw 5 so arranged as to have its forwar rounded end positioned in pressure contact against the wall of the cam face 2". The lower portion of the clamp leg1 isprovided with a spreading arm 6 w ch has an interior arcuate contour adapted to fit the cylindrical form of the insulator head upon which the clamp is mounted. 'A

' The arcuate face of the clamp leg is further illustrated in Fig. 4 and designated by the numeral 7. In manufacturing this form of insulator clamp the inner contacting face 7 of the clamp leg will have a-circumferential design adapted to fit the style of insulator for which the clamp is manufactured. The cap screw carried by the clam leg will be tightened up against the cam ace 2 of the clamp base member 1 thus pressing the face 7 of the clamp leg into pressure contact with the head of the insulator.

The insulator is designated by the reference character A in the drawings, and the insulator is usually formed with an up er rim B which leaves a grooved portion etwecn the upper rim B and the body A of the insulator.- The insulator clamp is designed to be fitted to the groove and thus securely held in position on the insulator.

The description has directly related to one clamping member of the base, but it is understood that the base member will be fitted with any appropriate number of the clam sets as is illustrated in the drawings. Usua 1y four e ui-distantly spaced clamp tracks and other places. This kind of iii-" cap is provided with cap screws 12 w ich pass through bores therein and screw-thread into'tapped bores within the base. Thus the adapter cap acts to hold cables or wires in a-clamped relation upon the base of the insulator clam I This formation of adapters may, be employed 'in connection with the disclosed form of insulator clamp. In Fig. 3 is showna slightly modified form of adapter which is designed to carry 'a single cable. It may also be desirable to employ-an adapter cap or fitting to be connected with a suspen'din link, or connected with some form of pipe ttm'g to hold the insulator'clamp suspended from a ceiling or" spaced outwardly from a wall;

Many different designs of adapter caps can obviously be employed for use m'connection with this form of insulator clamp. In manycases it. 's necessary to-emplo two or more insulators where high tension transmission lines are vlead 'overrailroad stallationusually requires the use'of several insulators and obviously several insulator clamps, It is the usual practice to space the insulators apart one from the other, and this is done by employing a spacer rod or link laced between the individual insulators. ods or links may be bolted or otherwise-so cured to the base of this clamp for spacing them apartin rigidrelationship.

. In mounting this insulator clamp'upon im sulators the cap screws carried by allt'ho clamp legs will be loosened up thus causing the legs to bespacedin their outwardly disposed position. .The clamp will then be ap plied to the neck or goove of the insulator ust under the rim thereof and the cap screws tightened up which closes the arcuate clam ing legs inward] against the cylin-. drica face of the insu ator. In some cases it may be desirable to use a piece of fiber or other thinjsheet material to form a better seating'position for the'clamp against the insulator.

"'t quite often happens that the circumferential proportions of insulators vary. This is occasioned by the process of manufacture which causes the molded or cast insulator material to become slightly di )rted thus when the insulator is turned ou of a factory with the -an adapter cap employed curs integrally form bythe v clamp leg as a finished product a m be slightly 0b lon in form instead of cylindrical. This insu ator clamp may befitted upon the dis- .torted and shapeless forms of insulators to the same efl'ect and advantage as it may be installed upon The invention is presented as cover'in a perfectly shaped insulators.

form of insulator clamp which will fi a long-feltwant in the erection of high tension transmission lines and other electrical uudertakin ters Patent is:

1. An insulator clamp comprising, abuse member, extended ears integrally formed with the base member a clamp leg pivo between the'ears, an the clamp leg formoving 'said leg intoa clamping position with any object u on whic themsulator clamp may be installed. 2. An insulator clamp comprising, abuse member, extended ears integrally formed base member, a clamp leg ivoted between the ears, and a screw carried? by the clamp leg for moving said leg into a clampmg position with any ob'ect upon which the insulator clamp may pivoting electric conductor cables; 3. An insulator clam comprising, a. base, therewith and arran ed in pairs','clampleg's pivotally confine betweenthe ears constituting a pair, a cam face formed on the base member ad'acent, the clamp leg, ands cap screw carried ing the cam to move the clam leg into clamping en agement with an insulator.

"4. insu ator clam comprising,a base, caisunteg'rally forme therewith and or ranged in pairs, clamp legs pivotally oon fined between the ears constituting afpair, acam face formed on the basemember adjacent the clamp leg, ried by the clamp leg forcom gaging the cam to move the 0 amp is into clamping engagement with an inslfiator, and an-adapter attachment em loyed in connection with the'base for holding electr c-wires,

5. An insulator clamp com ears provided on the base, c amp legs ivotally carried by the ears, an arcuate ace formed at the base of the clamp legs, and a screw carried by each clam leg to engage the arcuate face to force sailifclamp legs into a permanently clamped position uponany ressively ena screw carried by and a cap screw can.

0 installed, and on the base.for a for compressively engagob ect adapted to receive theinsulator clamps for driving the rocker arms in 1 clamped-relation algainst an object upon whici the insulator clamp is mounted.

' 7.1 An insulator clamp comprisingya base, Iovided therein, clumFs 'pivotally carried y' the ee s, 'arcuate was formed on the base, and). screw employed for moving the clampfmto contact position with any object upon which the msuletor clamp is inqlnounted, and an adegter cap fitted to the use.

" -upper portionof the 8. insulator clamp in the form of an adapter to carry electric transmission cables over an insulator, said adapter com rising, a base, ears inte rally formed with t e base and projecting rom the perimeter thereof, a device pivoted between the ears, said base having a cam formed thereon at the juncture of the ears and between the ears, means associated with the device to engage the cam and thrust the device in clamped osition a. einst the insulator upon which the a apter is mounted.

. JOHN SCHNEIDER 

